Gas and air mixer



C. MUNZNER GAS AND AIR MIXER Flled Jan 5 1922 May 22, 1923.

Patented May 22, 1923.

UNITED STATES PATENT OFFICE.

CEABLES mUN'zNEn, or CHICAGO, ILLINOIS, ASSIIGVNOR T AMERICAN sTovE com- PANY, or s'r. oUIs, MISSOURI, A ooRPoRATroN OF NEW JERSEY.

GAS AND AIR mrxnn.

Application filed January 3, 1922. Serial No. 526,821.

The object of my invention is to provide a novel gas and air mixer for use on gas stoves or other as burning appliances A further ob ect of my invention is to provide an improved gas and air mixer constructed to supply to the gas an extra amount of air to those devices 'now known in the art. f v

A stillfurther "object-of my invention is to provide an improved gas and air mixer which is cheap and simple of construction and manufacture operation.

Another object of my invention is to provide an improved gas and air mixer having certain novel features of construction which and highly efiicient in will .be hereinafter -more specifically set forth in the following description and ac companying drawings:

In the drawings: Figure 1 is a side elevation of my improved gas and air mixer,

ing tube leadingto the burner.

Fig. 2 is a longitudinal vertical section of Fig. 1. i

Fig. 3 is a'section view taken on the line 4o 33 of Fig. 2 looking in the direction indicated by arrows. f

Fig. 4 is a top' plan view of the air regulator. i p

The drawings disclose a form in which my structed although it wilhbe understood that I do not limit myself to the particular configuration of the several parts of my device. Throughout the description like, parts to a gas burner (not shown). One end of the .mixingtube 1 has an-enlarged mixing chamber 2 provided with a transverse web 5 or plate-2 having openings 4 therein which having the gas conduit supply and the mix-' improved gas and air 'mixer -may be'.c0'nare designated by similar reference numerals, 1 representing a mixing tube leading are adaptedto registen-with openings 5 in a shutter 6 having a flanged end 7, in engagement with. the end 8 of the mixing chamber 2 for retaining it in place;

handle or lever 13. -The outer end 14 of the gas jet 9 is screw thre'adedly or other- "at 21 upon the mixing tube 1.

The operation of my device is as follows: Gas is turned on from the supply conduit 15 through the gas cock or valve 12 by means of its operating handle '13 and isd scharged through the opening 10 of the charged gas in its course draws in air register with the mixing chamber openings hand this air co-mingles with thegas. If,- however, the .gas is rich,in carb'on it does not draw a sufficient amount ofair to support proper combustion and in order to furnish a larger supply, of air the gas mixture in the mixing tube 2 is discharged through the larger jet 16 into the mixing tube 1. -On its course into the mixing tube 1 the through the regulator openings 5 which Y gas draws in additional air through the openings 18 of a sufficient amount to properly support combustion at the pointof delivery of the mixin tube to a gas burner.

It will be readi y understood that the guard 20 is to guide th e currents of air admitted through its open end 19' and to pro- I tect the current'of airs from outer influences. It will also be readily understoodthat should any part or amount of air supplied to the gas be too excessive that the same can be reduced by rotating the shutter 6 upon its flanged edge 7 which is in engagement 85 jet 9 into the mixing chamber, 2. The dis- I claim and desire to with the end 8 of the mixing chamber. This chamber 2, provided at itsouter end with an inwardlyextending gas jet much shorter 16 having its wall, enlarge-d inwar than the length of the mixing chamber, the outerend of the mixing chamber provided with air-inlet openings,a reduced ortion d iy and provided with air-inlet openings, the outwardlyenlarged walldormed into a mixing tube ,for the throu gas and air passing there- 2. 4 air and gas mixer' for gas burners comprising a combined mixing chamber and a mixing tube formed of a continuous wall, the mixing chamber enlarged outwardly and having a gas jet therein much shorter than the length of the mixing chamber, the outer end of the mixing chamber having openings I surrounding the said gas jet, said continuous wall forming a reduced portion which is enlarged inwardly and then formed into a mixin tube, the inwardly enlarged wall 'provi ed with air-inlet purpose described.

Y 3. An air and gas mixer for gas burners openings 18, for'the comprising an inwardly" tapered chamber having a gas opening and air openings at its outer endthe tapered portion having an extended straight-wall ending in an enlarged portion, the said enlarged portion having air openings for I the purpose described.

4. A combined gas and air vmixer for burners comprisinga tubular mixing chamber having gas and air openings at its outer end, said tube having its wall provided with air openings removed fron the said' gas opening, and a surrounding shield having its inner end fitting the tube beyond the .last said air openings, the outer end of the shield being open for the purpose described. 5. A combined gas and air mixer having an outwardly enlarged chamber with gas and air openings at its outer end, the wall of I said chamber being enlarged and having air openings, a surrounding tubular shieldhav:

ing its inner. end fitting the chamber just beyond the last said air openings, the outer end of the shield being described.

6. A gas and air mixer for gas burners comprising a tubular mixing chamber having gas and air openings at its outer end, the opposite end of said tube enlarged in ward, said enlargement having air openin s for the purpose described.

open, for the purpose n testimony whereof I hereunto afiix my signature.

CHARLES MUNZNER. 

